<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style type="text/css">
        * {
            margin: 0;
            padding: 0;
        }

        ul {
            list-style: none;
        }

        .wrapper {
            width: 1000px;
            height: 475px;
            margin: 0 auto;
            margin-top: 100px;
        }

        .tab {
            border: 1px solid #ddd;
            border-bottom: 0;
            height: 36px;
            width: 320px;
        }

        .tab li {
            position: relative;
            float: left;
            width: 80px;
            height: 34px;
            line-height: 34px;
            text-align: center;
            cursor: pointer;
            border-top: 4px solid #fff;
        }

        .tab span {
            position: absolute;
            right: 0;
            top: 10px;
            background: #ddd;
            width: 1px;
            height: 14px;
            overflow: hidden;
        }

        .products {
            width: 1002px;
            border: 1px solid #ddd;
            height: 476px;
        }

        .products .main {
            float: left;
            display: none;
        }

        .products .main.selected {
            display: block;
        }

        .tab li.active {
            border-color: red;
            border-bottom: 0;
        }

    </style>
    <script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.js"></script>
</head>
<body>
<div class="wrapper">
    <ul class="tab">
        <li class="tab-item active">标题1♥</li>
        <li class="tab-item">标题2♥</li>
        <li class="tab-item">标题3♥</li>
        <li class="tab-item">标题4♥</li>
    </ul>
    <div class="products">
        <div class="main selected">
            <span class="a">1</span>
        </div>
        <div class="main">
            <span class="a">2</span>
        </div>
        <div class="main">
            <span class="a">3</span>
        </div>
        <div class="main">
            <span class="a">4</span>
        </div>
    </div>
</div>

</body>
<script>
    $(function () {
        $(".wrapper .tab-item").click(function () {
            $(this).addClass("active").siblings().removeClass("active");
            $(".products .main").eq($(this).index()).show().siblings().hide();
        })
    })
</script>
</html>
